Diet, Food and NutritionNCT05565859
Effects of an Educational Planetary Plate Graphic on Meat Consumption
A study testing Planetary Health Plate signage in people with Diet, Food and Nutrition, run by Stanford University at 1 site in United States.
Trial summary
The objective of this research was to determine if adding a plate graphic depicting the components of the Eat Lancet Planetary Health diet (Figure 1) to food labels in Stanford University dining halls would lead to dining hall patrons making dietary decisions that better resemble the Planetary Health diet in… Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Diet, Food and Nutrition
- What is being tested?
- Planetary Health Plate signage
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 957 participants
- Where
- 1 siteUnited States
- Study dates
- 2 Jan 2020to 9 Mar 2022
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Patrons of Florence Moore Dining Hall at Stanford.
Who cannot join
- None
Trial locations and contacts
1 site in 1 country.
United States1 site
Florence Moore Dining Hall, Stanford University
Stanford, California, 94305
About this study
Official title: Effects of an Educational Planetary Plate Graphic on Meat Consumption in Stanford University Dining Hall: a Randomized Controlled Trial
The objective of this research was to determine if adding a plate graphic depicting the components of the Eat Lancet Planetary Health diet (Figure 1) to food labels in Stanford University dining halls would lead to dining hall patrons making dietary decisions that better resemble the Planetary Health diet in comparison to a no signage control group. The study hypothesis was that presenting students with a plate graphic featuring the healthy reference diet would decrease objective measures of the amount of meat taken and therefore the environmental impact of student meals.
Read the detailed description
Research was conducted into the everyday experience of dining hall patrons. All participants were patrons of Florence Moore Dining Hall on the Stanford University campus where all data was collected. Patrons were largely undergraduate students.This investigation was designed as a crossover randomized control trial with two phases: (1) a Planetary Health Plate (PHP) intervention phase where signage promoting the planetary health diet was posted and (2) a control phase with signage as usual. Stanford Dining serves food on a four-week menu cycle; this pattern results in several academic weeks that are intended to be identical in food served. To standardize the conditions and limit potential confounding, the experimental and control phases were each randomized to one of the weeks throughout the quarter when the same, "week two" menu was to be served. Data was collected for the control phase during week two of the academic winter quarter and data with the PHP posted was collected during week six of the academic winter quarter.
On each data collection day, two different types of meat dishes were provided by the Dining Hall and there were two stations with each type. Research assistants weighed each serving tray of meat as it came from the kitchen and again before returning the used serving tray to the kitchen, to determine the total amount of meat taken from the tray. Tally counters were used to count the number of patrons who took meat from the tray. Qualitative notes about patron behavior and possible deviations from data collection protocol were recorded on data collection sheets. After each dinner collection period, Stanford Dining provided the total number of people who entered the dining hall during the designated dinner periods on each of the data collection days. This was based on the number of unique identification card swipes into the dining hall during dinner times.
Comparison was made between 1) dietary behavior without signage, and 2) behavior while exposed to PHP during four equivalent dinner meals.
- Conditions
- Diet, Food and Nutrition
- Being tested
- Planetary Health Plate signage
- Keywords
- Planetary health, Educational signage, Behavior change, Environment, Sustainability, Food choices, Food insecurity, Dietary behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Planetary Health Plate signageBehavioural
A Planetary Health Plate graphic was developed based on the healthy reference diet proposed by the Eat Lancet Commission. The graphic was designed to capture the food groups and proportions of food groups promoted by the Planetary Health diet.
| Study group | Role | What they receive |
|---|---|---|
| Planetary Health Plate Signage | Experimental | A Planetary Health Plate intervention phase where signage was posted in the dining hall promoting the planetary health diet Receives: Behavioral: Planetary Health Plate signage |
| Control | No intervention | Control phase with dining hall signage as usual. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Meat-dish weight
Meat-dish weight adjusted for the number of people entering the dining hall.
Measured: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Secondary outcomes (2)
Meat-dish servings
Number of meat-dish servings
Measured: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Meat-dish serving weight
Average meat-dish serving weight
Measured: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Oct 2022
- Study start2 Jan 2020
- Primary completion1 Jun 2020
- Study completion9 Mar 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Diet, Food and NutritionStudies of the same condition, open and under way.
- More trials run by Stanford UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Crossover randomized control trial with two phases: a Planetary Health Plate intervention phase where signage promoting the planetary health diet was posted and a control phase with signage as usual.
- Masking
- None (open label)
- Enrolment
- 957 participants (actual)
Sponsor and investigators
- Lead sponsor
- Stanford University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Christopher Gardner, Stanford University
- Investigators
- Christopher D Gardner, MD, Principal investigator, Stanford University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05565859
- Sponsor's protocol ID
- 52769
- Status last verified
- Sep 2022
- First submitted
- 21 Jul 2022
- Last updated
- 4 Oct 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Willett W, Rockstrom J, Loken B, Springmann M, Lang T, Vermeulen S, Garnett T, Tilman D, DeClerck F, Wood A, Jonell M, Clark M, Gordon LJ, Fanzo J, Hawkes C, Zurayk R, Rivera JA, De Vries W, Majele Sibanda L, Afshin A, Chaudhary A, Herrero M, Agustina R, Branca F, Lartey A, Fan S, Crona B, Fox E, Bignet V, Troell M, Lindahl T, Singh S, Cornell SE, Srinath Reddy K, Narain S, Nishtar S, Murray CJL. Food in the Anthropocene: the EAT-Lancet Commission on healthy diets from sustainable food systems. Lancet. 2019 Feb 2;393(10170):447-492. doi: 10.1016/S0140-6736(18)31788-4. Epub 2019 Jan 16. No abstract available.
PubMed 30660336Marcone AL, Darmstadt GL, Challamel GA, Mathur MB, Gardner CD. Effects of an educational planetary plate graphic on meat consumption in a Stanford University dining hall: a randomized controlled trial. BMC Nutr. 2023 Sep 25;9(1):106. doi: 10.1186/s40795-023-00764-3.
PubMed 37749609
Study at a glance
From the registry record, last updated by the sponsor on 4 Oct 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of an Educational Planetary Plate Graphic on Meat Consumption in Stanford University Dining Hall: a Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT05565859
- Acronym / sponsor ID
- 52769
- Conditions
- Diet, Food and Nutrition
- Keywords
- Planetary health, Educational signage, Behavior change, Environment, Sustainability, Food choices, Food insecurity, Dietary behavior
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 957 participants (actual)
- Lead sponsor
- Stanford UniversityUniversity, hospital or other
- Study start
- 2 Jan 2020 (actual)
- Primary completion
- 1 Jun 2020 (actual)
- Study completion
- 9 Mar 2022 (actual)
- First posted
- 4 Oct 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objective of this research was to determine if adding a plate graphic depicting the components of the Eat Lancet Planetary Health diet (Figure 1) to food labels in Stanford University dining halls would lead to dining hall patrons making dietary decisions that better resemble the Planetary Health diet in comparison to a no signage control group. The study hypothesis was that presenting students with a plate graphic featuring the healthy reference diet would decrease objective measures of the amount of meat taken and therefore the environmental impact of student meals.
Detailed description
Research was conducted into the everyday experience of dining hall patrons. All participants were patrons of Florence Moore Dining Hall on the Stanford University campus where all data was collected. Patrons were largely undergraduate students.This investigation was designed as a crossover randomized control trial with two phases: (1) a Planetary Health Plate (PHP) intervention phase where signage promoting the planetary health diet was posted and (2) a control phase with signage as usual. Stanford Dining serves food on a four-week menu cycle; this pattern results in several academic weeks that are intended to be identical in food served. To standardize the conditions and limit potential confounding, the experimental and control phases were each randomized to one of the weeks throughout the quarter when the same, "week two" menu was to be served. Data was collected for the control phase during week two of the academic winter quarter and data with the PHP posted was collected during week six of the academic winter quarter.
On each data collection day, two different types of meat dishes were provided by the Dining Hall and there were two stations with each type. Research assistants weighed each serving tray of meat as it came from the kitchen and again before returning the used serving tray to the kitchen, to determine the total amount of meat taken from the tray. Tally counters were used to count the number of patrons who took meat from the tray. Qualitative notes about patron behavior and possible deviations from data collection protocol were recorded on data collection sheets. After each dinner collection period, Stanford Dining provided the total number of people who entered the dining hall during the designated dinner periods on each of the data collection days. This was based on the number of unique identification card swipes into the dining hall during dinner times.
Comparison was made between 1) dietary behavior without signage, and 2) behavior while exposed to PHP during four equivalent dinner meals.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Crossover randomized control trial with two phases: a Planetary Health Plate intervention phase where signage promoting the planetary health diet was posted and a control phase with signage as usual.
| Arm | Type | Receives |
|---|---|---|
| Planetary Health Plate Signage | Experimental | Behavioral: Planetary Health Plate signageA Planetary Health Plate intervention phase where signage was posted in the dining hall promoting the planetary health diet |
| Control | No intervention | –Control phase with dining hall signage as usual. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Patrons of Florence Moore Dining Hall at Stanford.
Key exclusion criteria (1 listed)
- None
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Planetary Health Plate signageA Planetary Health Plate graphic was developed based on the healthy reference diet proposed by the Eat Lancet Commission. The graphic was designed to capture the food groups and proportions of food groups promoted by the Planetary Health diet. | Behavioural | Planetary Health Plate Signage |
Primary outcome
Meat-dish weight
Time frame: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Meat-dish weight adjusted for the number of people entering the dining hall.
2 secondary outcomes
Meat-dish servings
Time frame: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Meat-dish serving weight
Time frame: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Oct 2022.
- Background: PubMed 30660336Willett W, Rockstrom J, Loken B, Springmann M, Lang T, Vermeulen S, Garnett T, Tilman D, DeClerck F, Wood A, Jonell M, Clark M, Gordon LJ, Fanzo J, Hawkes C, Zurayk R, Rivera JA, De Vries W, Majele Sibanda L, Afshin A, Chaudhary A, Herrero M, Agustina R, Branca F, Lartey A, Fan S, Crona B, Fox E, Bignet V, Troell M, Lindahl T, Singh S, Cornell SE, Srinath Reddy K, Narain S, Nishtar S, Murray CJL. Food in the Anthropocene: the EAT-Lancet Commission on healthy diets from sustainable food systems. Lancet. 2019 Feb 2;393(10170):447-492. doi: 10.1016/S0140-6736(18)31788-4. Epub 2019 Jan 16. No abstract available.
- Derived from this study: PubMed 37749609Marcone AL, Darmstadt GL, Challamel GA, Mathur MB, Gardner CD. Effects of an educational planetary plate graphic on meat consumption in a Stanford University dining hall: a randomized controlled trial. BMC Nutr. 2023 Sep 25;9(1):106. doi: 10.1186/s40795-023-00764-3.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Christopher D Gardner, MD principal investigator
Stanford University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Planetary Health Plate signage in people with Diet, Food and Nutrition, run by Stanford University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Oct 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Meat-dish weight (time frame: Control: 4 days (during dinner meals Mon -Thurs) during week 2 of the academic quarter. Intervention: 4 days (during dinner meals Mon -Thurs) during week 6.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05565859, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Oct 2022.